Vintage GRANTLINE models 500 and 501 Superheterodyne 5 tube AM radio receiver. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test charts, repair parts list and description. Dated 1946. 4 pages. W.T. Grant Company, of New York, NY. This manual would make a sensational accompaniment to your classic retro radio equipment.